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-rw-r--r--src/driver/ntux_driver_ctx.c188
-rw-r--r--src/internal/ntux_driver_impl.h6
-rw-r--r--src/skin/ntux_skin_default.c4
-rw-r--r--src/skin/ntux_skin_spawn.c12
-rw-r--r--src/skin/ntux_skin_strace.c12
5 files changed, 182 insertions, 40 deletions
diff --git a/src/driver/ntux_driver_ctx.c b/src/driver/ntux_driver_ctx.c
index 95b4186..1b0d8f8 100644
--- a/src/driver/ntux_driver_ctx.c
+++ b/src/driver/ntux_driver_ctx.c
@@ -70,7 +70,13 @@ static int ntux_driver_usage(
snprintf(header,sizeof(header),
"Usage: %s [options] ...\n"
- "Usage: %s [options] --cmd=<command> <arg> <arg> ...\n" "Options:\n",
+ "Usage: %s [options] [--cmd=<command>] <arg> <arg> ...\n\n"
+ "Notes: --cmd must precede all non-option arguments, as well as\n"
+ " all arguments that are specific to the selected command;\n"
+ " for commands that spawn other programs (e.g. spawn, strace),\n"
+ " the first non-option argument must specify the name of the\n"
+ " program to be executed.\n\n"
+ "Options:\n",
program,program);
argv_usage(stdout,header,optv,arg);
@@ -116,6 +122,55 @@ static struct ntux_driver_ctx_impl * ntux_driver_ctx_alloc(
return &ictx->ctx;
}
+static int ntux_cctx_update(
+ const char * program,
+ const struct argv_option ** optv,
+ struct argv_meta * meta,
+ uint32_t flags,
+ struct ntux_common_ctx * cctx,
+ size_t * nunits)
+{
+ struct argv_entry * entry;
+
+ /* get options, count units */
+ for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
+ if (entry->fopt) {
+ switch (entry->tag) {
+ case TAG_HELP:
+ if (flags & NTUX_DRIVER_VERBOSITY_USAGE)
+ return ntux_driver_usage(
+ program,entry->arg,
+ optv,0);
+
+ case TAG_VERSION:
+ cctx->drvflags |= NTUX_DRIVER_VERSION;
+ break;
+
+ case TAG_CMD:
+ if (*nunits)
+ return ntux_driver_usage(
+ program,entry->arg,
+ optv,0);
+
+ if (!strcmp(entry->arg,"stat"))
+ cctx->cmd = NTUX_CMD_STAT;
+
+ else if (!strcmp(entry->arg,"spawn"))
+ cctx->cmd = NTUX_CMD_SPAWN;
+
+ else if (!strcmp(entry->arg,"strace"))
+ cctx->cmd = NTUX_CMD_STRACE;
+
+ break;
+ }
+ } else {
+ (*nunits)++;
+ }
+ }
+
+ return 0;
+}
+
static int ntux_get_driver_ctx_fail(struct argv_meta * meta)
{
argv_free(meta);
@@ -128,64 +183,125 @@ int ntux_get_driver_ctx(
uint32_t flags,
struct ntux_driver_ctx ** pctx)
{
- struct ntux_driver_ctx_impl * ctx;
+ struct ntux_driver_ctx_impl * ictx;
struct ntux_common_ctx cctx;
const struct argv_option * optv[NTUX_OPTV_ELEMENTS];
struct argv_meta * meta;
- struct argv_entry * entry;
size_t nunits;
const char * program;
-
- (void)envp;
-
- argv_optv_init(ntux_default_options,optv);
-
+ char ** parg;
+ char ** cmdargv;
+ char * cmdmark;
+ char ** execargv;
+ char * execarg;
+ struct argv_ctx ctx = {ARGV_VERBOSITY_NONE,
+ ARGV_MODE_SCAN,
+ 0,0,0,0,0,0,0};
+
+ /* init */
if (ntux_init())
return -1;
- if (!(meta = argv_get(argv,optv,ntux_argv_flags(flags))))
- return -1;
-
- nunits = 0;
- program = argv_program_name(argv[0]);
memset(&cctx,0,sizeof(cctx));
+
cctx.drvflags = flags;
+ program = argv_program_name(argv[0]);
+ nunits = 0;
+ execargv = 0;
+
+ /* missing arguments? */
+ argv_optv_init(ntux_default_options,optv);
if (!argv[1] && (flags & NTUX_DRIVER_VERBOSITY_USAGE))
- return ntux_driver_usage(program,0,optv,meta);
+ return ntux_driver_usage(program,0,optv,0);
+
+ /* initial argv scan: ... --cmd=xxx ... */
+ for (parg=argv, cmdargv=0; *parg && !cmdargv; parg++) {
+ if (!strcmp(*parg,"--cmd") && parg[1]) {
+ cmdargv = &parg[2];
+ cmdmark = parg[2];
+ } else if (!strncmp(*parg,"--cmd=",6)) {
+ cmdargv = &parg[1];
+ cmdmark = parg[1];
+ }
+ }
- /* get options, count units */
- for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
- if (entry->fopt) {
- switch (entry->tag) {
- case TAG_HELP:
- if (flags & NTUX_DRIVER_VERBOSITY_USAGE)
- return ntux_driver_usage(program,entry->arg,optv,meta);
+ /* process argv entries preceding --cmd */
+ if (cmdargv) {
+ *cmdargv = 0;
- case TAG_VERSION:
- cctx.drvflags |= NTUX_DRIVER_VERSION;
- break;
+ if (!(meta = argv_get(argv,optv,ntux_argv_flags(flags))))
+ return -1;
- case TAG_CMD:
- if (!strcmp(entry->arg,"stat"))
- cctx.cmd = NTUX_CMD_STAT;
- break;
- }
- } else
- nunits++;
+ if (ntux_cctx_update(program,optv,meta,flags,&cctx,&nunits)) {
+ argv_free(meta);
+ return -1;
+ }
+
+ *cmdargv-- = cmdmark;
+ *cmdargv = argv[0];
+ argv = cmdargv;
}
+ /* set option vector by command */
+ if (cctx.cmd == NTUX_CMD_SPAWN)
+ argv_optv_init(ntux_spawn_options,optv);
+
+ else if (cctx.cmd == NTUX_CMD_STRACE)
+ argv_optv_init(ntux_strace_options,optv);
+
+ /* spawn, strace */
+ if ((cctx.cmd == NTUX_CMD_SPAWN) || (cctx.cmd == NTUX_CMD_STRACE)) {
+ argv_scan(argv,optv,&ctx,0);
+
+ if (ctx.erridx && !ctx.unitidx) {
+ if (flags & NTUX_DRIVER_VERBOSITY_ERRORS)
+ argv_get(
+ argv,optv,
+ ntux_argv_flags(flags));
+ return -1;
+ }
+
+ if (!ctx.unitidx && (flags & NTUX_DRIVER_VERBOSITY_USAGE))
+ ntux_driver_usage(program,0,optv,0);
+
+ if (!ctx.unitidx)
+ return NTUX_ERROR;
+
+ execargv = &argv[ctx.unitidx];
+ execarg = argv[ctx.unitidx];
+ *execargv = 0;
+ }
+
+ /* obtain ntux's own arguments */
+ if (!(meta = argv_get(argv,optv,ntux_argv_flags(flags))))
+ return -1;
+
+ if (ntux_cctx_update(program,optv,meta,flags,&cctx,&nunits)) {
+ argv_free(meta);
+ return -1;
+ }
+
+ /* spawn, strace: exec argv */
+ if (execargv) {
+ *execargv = execarg;
+ cctx.sargv = execargv;
+ cctx.senvp = envp;
+ nunits = 0;
+ }
+
+ /* finalize */
if (nunits && !cctx.cmd)
return ntux_driver_usage(program,0,optv,meta);
- if (!(ctx = ntux_driver_ctx_alloc(meta,&cctx,nunits)))
+ if (!(ictx = ntux_driver_ctx_alloc(meta,&cctx,nunits)))
return ntux_get_driver_ctx_fail(meta);
- ctx->ctx.program = program;
- ctx->ctx.cctx = &ctx->cctx;
+ ictx->ctx.program = program;
+ ictx->ctx.cctx = &ictx->cctx;
+ *pctx = &ictx->ctx;
- *pctx = &ctx->ctx;
- return NTUX_OK;
+ return 0;
}
int ntux_create_driver_ctx(
diff --git a/src/internal/ntux_driver_impl.h b/src/internal/ntux_driver_impl.h
index 38d10cc..3f7520f 100644
--- a/src/internal/ntux_driver_impl.h
+++ b/src/internal/ntux_driver_impl.h
@@ -11,8 +11,10 @@
#define NTUX_OPTV_ELEMENTS 64
-extern const struct argv_option ntux_default_options[];
-extern const ntapi_vtbl * ntux_ntapi;
+extern const struct argv_option ntux_default_options[];
+extern const struct argv_option ntux_spawn_options[];
+extern const struct argv_option ntux_strace_options[];
+extern const struct _ntapi_vtbl * ntux_ntapi;
#define ntapi ntux_ntapi
diff --git a/src/skin/ntux_skin_default.c b/src/skin/ntux_skin_default.c
index fa4c33d..73a89bf 100644
--- a/src/skin/ntux_skin_default.c
+++ b/src/skin/ntux_skin_default.c
@@ -8,8 +8,8 @@ const struct argv_option ntux_default_options[] = {
{"help", 'h',TAG_HELP,ARGV_OPTARG_OPTIONAL,0,"short|long",0,
"show usage information [listing %s options only]"},
- {"cmd", 0,TAG_CMD,ARGV_OPTARG_REQUIRED,0,"stat",0,
- "invoke an internal ntux command"},
+ {"cmd", 0,TAG_CMD,ARGV_OPTARG_REQUIRED,0,"stat|spawn|strace",0,
+ "invoke one of the following ntux commands: %s"},
{0,0,0,0,0,0,0,0}
};
diff --git a/src/skin/ntux_skin_spawn.c b/src/skin/ntux_skin_spawn.c
new file mode 100644
index 0000000..d7bac9b
--- /dev/null
+++ b/src/skin/ntux_skin_spawn.c
@@ -0,0 +1,12 @@
+#include "ntux_driver_impl.h"
+#include "argv/argv.h"
+
+const struct argv_option ntux_spawn_options[] = {
+ {"version", 'v',TAG_VERSION,ARGV_OPTARG_NONE,0,0,0,
+ "show version information"},
+
+ {"help", 'h',TAG_HELP,ARGV_OPTARG_OPTIONAL,0,"short|long",0,
+ "show usage information [listing %s options only]"},
+
+ {0,0,0,0,0,0,0,0}
+};
diff --git a/src/skin/ntux_skin_strace.c b/src/skin/ntux_skin_strace.c
new file mode 100644
index 0000000..643c114
--- /dev/null
+++ b/src/skin/ntux_skin_strace.c
@@ -0,0 +1,12 @@
+#include "ntux_driver_impl.h"
+#include "argv/argv.h"
+
+const struct argv_option ntux_strace_options[] = {
+ {"version", 'v',TAG_VERSION,ARGV_OPTARG_NONE,0,0,0,
+ "show version information"},
+
+ {"help", 'h',TAG_HELP,ARGV_OPTARG_OPTIONAL,0,"short|long",0,
+ "show usage information [listing %s options only]"},
+
+ {0,0,0,0,0,0,0,0}
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 23:17:58 +0000